As Twitchy notes, this flawed “front-end estimation” method wasn’t invented by the people behind Common Core. The concept — which refers to the correct answer to an addition problem as merely “reasonable” and allows students to be off by over 22 percent in their estimation — has been around for decades.

At the same time, the methodology is aligned with the Common Core State Standards Initiative, which attempts to standardize various K-12 curricula around the country.

This math lesson is just one more in the constantly burgeoning inventory of hideous Common Core math problems.

This particular math problem is strangely reminiscent of the video The Daily Caller exposed over the summer showing a curriculum coordinator in suburban Chicago perkily explaining that Common Core allows students to be totally right if they say 3 x 4 = 11 as long as they spout something about the necessarily faulty reasoning they used to get to that wrong answer. (RELATED: Obama math: under new Common Core, 3 x 4 = 11 [VIDEO])